In exclusive sneak peek pics, the final four couples can be seen reuniting with the rest of the season 27 cast. Together, they will all open the show with an extravagant parade, complete with a marching band and floats.

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Monday's live telecast, airing at 8 p.m. ET/PT on ABC, will also feature special performances by Avril Lavigne, Dan + Shay, Lauren Daigle, John Schneider, Robin Thicke and Tinashe.